The 2012 Im at 30gps, egr 22% but load is 1%. Should be around 20% at idle. I don't want opinion. A while ago the EXH. You can its in the setting but mine would do the burn every 250 to 300 k's automatically and to be honest you hardly notice it usually between ten and fifteen minutes for the Isuzu. To those having trouble, what Ive read it seems that the Isuzus are set up to do a regen when the DPF reaches 70% blocked, whereas the Hinos are set up to regen at only 30%, so that if you delay a regen in an Isuzu, the DPF becomes critically blocked and the truck goes into limp home mode.My question is, can you manually regen the DPF before it reaches the 70% mark? I perform a forced selective regen. This is completely unhelpful but we had the same problem on the same model truck and couldn't get on top of it,ended up auctioning it. You will need a really good OBDII scanner to read the codes and put the unit in a manual regeneration. Regeneration may take longer if the engine is cold. These errors, before long, will cause the engine to go into Derate-power (Limp) mode causing it an issue to drive and can lead to further problems. Less soot = Less need for DPF regeneration. It set a p0172 this afternoon. The DPF was manually cleaned. is everyone that's having problems getting the repairs done by an Isuzu dealer or just a mechanic that thinks they know what they are doing? x NPR: NPR. After about 30 seconds the engine starts to load up. Regen wont continue because my LOAD is too low. As you note, replacement DPF's don't always behave like the first oneand this is quite possibly because of the extra junk it's expected to swallowonce the engine ages. It takes, EGT gets to 680* and it goes back to 200 regen start. I’m sitting in my truck as I write this sort of freaking out.. Ones a 2012, ones a 2018. You’ve probably been forced to pull your truck over for a manual regeneration and possibly even experienced a severe derate rendering your truck useless and forcing a trip to the dealer. It relates to irregular regeneration burns in the DPD filter – sorry to be so wordy, but I type fast and you may need all the pieces to the puzzle if you want to try and solve it. If there are any new similar experiences out there who have managed to fix the DPF problems on similar vehicles without mortgaging the family home or taking the truck to the dump, I would like to hear from them. this last go around I did a DOC, EGT1/2, aftertreatment injector, so except for the SCR, the aftertreatment is all new. When the cooling system is not working properly, the engine may end up overheating. I have a bunch of questions though. actually it'll be a complex mix of lubricant additives, wear metals and other non-combustible material. Code Description JAL ISUZU Code Description 1 4 x 2 Code Plant Location 7 Fujisawa Code Description Cab Type W Code Series 4 NPR Code Description B 10001-14000 lbs. I pulled over and thought may as well do it manually as I’ll be stationed for an hour or so.. Regen bars are still full and nothing has been done. so it cost $3800 but it eliminated the problem might pay you to check out if it can be done to your truck im pretty sure it can especially if it is before 2016 -2017 . Campaign Number: 16V797000 Date Manufactured: Nov 02, 2016 Vehicles Affected: 25018 Manufacturer: Isuzu Technical Center Of America, Inc. Mfr's Report Date: Nov 02, 2016 Component: Vehicle Speed Control 2015 Isuzu Npr Vehicle Speed Control Recall 16V797000 This can be a sign leading to a failing DPF unit or AdBlue Module. And that's the only thing I don't like, Id like to see atmosphere at idle. They're checking the wiring out at the same time but feel the turbocharger could be interfering with everything else. I have IDSS and factory service info. As I said above, it will sit at "200-regen start" forever, then sometime it will start the regen (370-regen active) then a couple times WHILE IN REGEN ACTIVE, will kick out into regen start. Isuzu truck DPD regen problems - can anyone help? I didnt know which values to trust so i swung it. If the turbo oil seals are leaking, burnt oil smoke will fill the DPF quickly. My feeling is that even an aging turbocharger isn't going to produce soot at a standard rate for 280km then produce soot at 400% higher rate for 30km to trigger a burn, then go back to a standard rate of soot production, then 300% more, and then normal and so on (and the short burns where the bars on the display jump from one bar to four or five happen in both city driving and open road 100km of 100kph driving). Hydraulic Brake System Code Description 6 Isuzu 4HK1-TC Steel Tilt Single Cab 71 inch BBC: Bumper to Back of Cab 55698_Sec00_'07 08.2.8 11:40 AM Page 8 I have this 2012 NPR, Im calling out more professionals for assistance, seeing as many of my die hards have left the mothership and came here. is in the tool. If this is the case, get them to clean the intercooler and other pipes of leaked oil as well. I poke through and clean it. Is the EGR working? None of the…, FWIW, mine would not got hot enough to start regen. I had an FRR600 where the had become a problem apparently the former ownewr every time it came up to do a burn turned the engine off in the end I think the computer just gave up trying .Took it into Isuzu ballarat and they reest the computerbut also changed part of the exhaust system as apparently they are prone to splitting which can alter the burn procedure. Need help figuring it out. I get it together and try a regen. Also caused by continuous idling in cold conditions. Last time i had issues like this it was the injectors. That is in service information. When the regeneration in progress indicator light goes out, the "Selectable" regeneration is complete. They tell me VW were experimenting with that idea but alas... Trouble is all new diesels will have DPF filtering as part of the emmisions standards My mate bought a Landcruiser v8 about two years ago and wanted to buy a new one and was told it would have DPF from 2016 he's now bought a Dodge2500 but can remove the adblu if it becomes troublesome.Mine is a 2011 silverado and the adblu caused no end of trouble had the truck chipped no more problems. This information may be used by NHTSA during the investigation process. I kick it out and retry a few times. If anyone out there is an Isuzu tech and has training info they would share with me it would be appreciated. Oh, extra info – in the last five days it has started asking for a manual burn on top of the many irregular burns. Home / isuzu npr problems. But ECT is good and believable, IAT is good and believable, EGR inlet, EGT1 and 2 are all believable. But kicked out as the compressor disengaged. It had been burning at the 300km mark for every burn (the maximum it will go before burning, indicating it may not have been functioning properly and was just defaulting to the maximum kilometre burn rather than burning when necessary). Our other Isuzu went to 1.6million k without any problems so 800,000k may seem a lot but it has always had the best servicing and preventative maintenance and replacement of parts and, apart from this DPD filter problem, runs like a new truck. Regened for me a…. But once cleared it never came back.

Hey Jon we have a resident mechanic by the name greasytshirt. is everyone that's having problems getting the repairs done by an Isuzu dealer, I’d be going to the Isuzu dealer in the first instance. Hmm, it is at 100% (open) and commanded as such. To those having trouble, what Ive read it seems that the Isuzus are set up to do a regen when the DPF reaches 70% blocked, whereas the Hinos are set up to regen at only 30%, so that if you delay a regen in an Isuzu, the DPF becomes critically blocked and the truck goes into limp home mode.My question is, can you manually regen the DPF before it reaches the 70% mark? I can take CAC pipes off, put pipes on, open egr, close egr, remove the cooler, nothing seems to change load. I guess we'll know in a few days. The soot on the other side of the filter can be caused be a build up of ash in the filer and while a regen is carried out can cause a hot spot in the filter and crack causing soot to leak past. Most dealerships have diagnostic tools with which they can test your truck's DPF status, and check PM levels. I perform a forced selective regen. Err, no thanks, though it sounds like a weight loss method that might actually work;D. I recently saw the absolute bomb crater of an inlet system on a turbodiesel Prado with 300,000k's on it. It's all good to have a process that works well with new engines, but the process needs to produce consistent results as these engines age. Nice but as you say not quite legal mine apparently is legal but all the equipment is still there as its too hard to take it all out apparently . System goes 200 - regen start. So it got a sensor and manifold. It's getting a new turbocharger put in tomorrow and we'll see if that makes a difference to the regen times. Im out of ideas, Does this one have the exhaust brake by the DPF? I had already replaced the exhaust brake a couple of weeks ago, but I did take the cover off and was able to adjust the stop so it would close a little tighter. i cant see emails because im only new here. Then it would Regen. we have had the EGR valve cleaned and replaced. This is my work truck, its an Isuzu NQR chassis, engine is a 4HKI-TC. Have you run the nozzle and SCR tests? Unless…, I changed the doc, because in my experience, if the thing is dosing and not making fire, the doc is worn out. There are DPF cleaning services if you search around- https://www.dpfregen.com.au/diesel-truck-dpf-cleaning-sydney/and you have to do a bit of homework on maintaining your DPF-http://www.oilem.com/dpf-cleaners-and-dpf-cleaning/and no doubt cleaning machine technology is advancing with the size of the problem. I’ve left it idling on 2 occasions for over 40 mine and it didn’t drop a bar.. Howver, I can smell the burning.. If I take…, There is a little bit of aftertreatment added at the end. I have a 2011 Isuzu NPR with a 5.2 MIL and REGEN illuminated, but no engine performance problems, or derate. As I think you know, the service information, TSBs, etc. wtf. The scan tool will display a higher percentage when the engine is running at high engine speed under a heavy load. data lists o2 content at 15% and 16% idling, I haven't watched it driving. But I am stumped, my local Isuzu "lead tech" is stumped.